Fixed common misspellings.

Mostly found by 'codespell'.

src/include/linux/udp.h

@@ -47,7 +47,7 @@ struct udp_sock {
 	unsigned int	 corkflag;	/* Cork is required */
 	__u16		 encap_type;	/* Is this an Encapsulation socket? */
 	/*
-	 * Following member retains the infomation to create a UDP header
+	 * Following member retains the information to create a UDP header
 	 * when the socket is uncorked.
 	 */
 	__u16		 len;		/* total length of pending frames */